sfa/rspecs/sfa_rspec_converter.py

   1 #!/usr/bin/python
   2
   3 from sfa.util.xrn import hrn_to_urn
   4 from sfa.rspecs.rspec import RSpec
   5 from sfa.rspecs.version_manager import VersionManager
   6
   7 class SfaRSpecConverter:
   8
   9     @staticmethod
  10     def to_pg_rspec(rspec, content_type = None):
  11         if not isinstance(rspec, RSpec):
  12             sfa_rspec = RSpec(rspec)
  13         else:
  14             sfa_rspec = rspec
  15
  16         if not content_type or content_type not in \
  17           ['ad', 'request', 'manifest']:
  18             content_type = sfa_rspec.version.content_type
  19
  20
  21         version_manager = VersionManager()
  22         pg_version = version_manager._get_version('protogeni', '2', 'request')
  23         pg_rspec = RSpec(version=pg_version)
  24
  25         # get networks
  26         networks = sfa_rspec.version.get_networks()
  27
  28         for network in networks:
  29             # get nodes
  30             sfa_node_elements = sfa_rspec.version.get_node_elements(network=network)
  31             for sfa_node_element in sfa_node_elements:
  32                 # create node element
  33                 node_attrs = {}
  34                 node_attrs['exclusive'] = 'false'
  35                 if 'component_manager_id' in sfa_node_element.attrib:
  36                     node_attrs['component_manager_id'] = sfa_node_element.attrib['component_manager_id']
  37                 else:
  38                     node_attrs['component_manager_id'] = hrn_to_urn(network, 'authority+cm')
  39
  40                 if 'component_id' in sfa_node_element.attrib:
  41                     node_attrs['compoenent_id'] = sfa_node_element.attrib['component_id']
  42
  43                 if sfa_node_element.find('hostname') != None:
  44                     hostname = sfa_node_element.find('hostname').text
  45                     node_attrs['component_name'] = hostname
  46                     node_attrs['client_id'] = hostname
  47                 node_element = pg_rspec.xml.add_element('node', node_attrs)
  48
  49                 if content_type == 'request':
  50                     sliver_element = sfa_node_element.find('sliver')
  51                     sliver_type_elements = sfa_node_element.xpath('./sliver_type', namespaces=sfa_rspec.namespaces)
  52                     available_sliver_types = [element.attrib['name'] for element in sliver_type_elements]
  53                     valid_sliver_types = ['emulab-openvz', 'raw-pc']
  54
  55                     # determine sliver type
  56                     requested_sliver_type = 'emulab-openvz'
  57                     for available_sliver_type in available_sliver_types:
  58                         if available_sliver_type in valid_sliver_types:
  59                             requested_sliver_type = available_sliver_type
  60
  61                     if sliver_element != None:
  62                         pg_rspec.xml.add_element('sliver_type', {'name': requested_sliver_type}, parent=node_element)
  63                 else:
  64                     # create node_type element
  65                     for hw_type in ['plab-pc', 'pc']:
  66                         hdware_type_element = pg_rspec.xml.add_element('hardware_type', {'name': hw_type}, parent=node_element)
  67                     # create available element
  68                     pg_rspec.xml.add_element('available', {'now': 'true'}, parent=node_element)
  69                     # create locaiton element
  70                     # We don't actually associate nodes with a country.
  71                     # Set country to "unknown" until we figure out how to make
  72                     # sure this value is always accurate.
  73                     location = sfa_node_element.find('location')
  74                     if location != None:
  75                         location_attrs = {}
  76                         location_attrs['country'] =  location.get('country', 'unknown')
  77                         location_attrs['latitude'] = location.get('latitude', 'None')
  78                         location_attrs['longitude'] = location.get('longitude', 'None')
  79                         pg_rspec.xml.add_element('location', location_attrs, parent=node_element)
  80
  81         return pg_rspec.toxml()
  82
  83 if __name__ == '__main__':
  84     import sys
  85     if len(sys.argv) > 1:
  86         print SfaRSpecConverter.to_pg_rspec(sys.argv[1])